Method and composition for inhibiting general and pitting corros

Chemical apparatus and process disinfecting – deodorizing – preser – Process disinfecting – preserving – deodorizing – or sterilizing – Maintaining environment nondestructive to metal

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210697, 210699, 210700, 210701, 2523892, 25238954, 25238962, 422 14, 422 15, C23F 1100

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active

053763319

ABSTRACT:
A method of inhibiting the pitting corrosion rate of carbon steel in a cooling tower system comprising adding to a cooling tower water an effective amount of a corrosion inhibiting composition containing from about 1 to about 10 ppm of a water soluble molybdate, calculated as molybdate and from about 5 to about 25 ppm of a stabilized phosphate, calculated as phosphate, the corrosion inhibiting composition being substantially free of active zinc, and circulating the water in the system.

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patent: 5227133 (1993-07-01), Bucher et al.

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